CN2542745Y

CN2542745Y - Separating time-delay flushing valve spool

Info

Publication number: CN2542745Y
Application number: CN 02227628
Authority: CN
Inventors: 叶国荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-05-15
Filing date: 2002-05-15
Publication date: 2003-04-02
Anticipated expiration: 2012-05-15

Abstract

The utility model discloses a valve core of a separated time-delaying water-flushing valve; the valve core and the valve rod of the universally used delaying water flushing valve core at present are integral or of a screw connected type, having the shortcoming of heavy hand feeling of hand pressing while used or relative rotation causing the valve rod and the hand pressing getting loose and losing when being pressed; the utility model uses a delaying water flushing valve core where the valve core and the valve rod has separated, a valve rod is arranged at the upper end of the smaller valve core, which avoids the shortcoming of the threaded connection; while the hand pressing presses the valve rod to move downwards, the smaller valve core is pushed firstly, and then the valve rod is pushed to move downwards, which reduces largely the pressure of the hand feeling of the users in operation. The utility model extensively is applicable for all kinds of delaying water flushing valve cores.

Description

Separate type delay flushing valve spool

Technical field

The utility model relates to a kind of spool, particularly a kind of separate type delay flushing valve spool.

Background technology

The present delay flushing valve spool that generally uses, first generation product is that spool and valve rod, pressure hand are connected to one, when depressing hand, water in the time-delay chamber can spill from leak-off chute by force, press the hand feel heavy, the y-type seal ring in sealing time-delay chamber was easily lost efficacy in the course of time and was out of shape by high pressure water impact; Second generation product is that spool is divided into buoyancy aid and time-delay chamber spool, and the valve rod of time-delay chamber spool passes buoyancy aid, utilizes screw thread to fixedly connected with pressing hand, at this moment, valve rod is very long, and valve rod requires high with the axiality of pressing hand, otherwise, press the feel of hand to have some setbacks, and, for the needs of rigidity, valve rod can be very thick, the buoyancy aid hole also must be big, and like this, the feel of pressure hand also can be very heavy; Sometimes, because the needs of structure, buoyancy aid must be done little, and the buoyancy aid hole also just can not be big, at this moment, valve rod can only be divided into two sections, one section in the buoyancy aid is small valve core, and the small valve core front end is connected with another section valve rod by screw thread, still, improved like this result makes the valve rod of the small valve core of hypomere and epimere produce relative rotation easily when pressing hand moving and becomes flexible, and causes valve rod to get loose from valve body together with the pressure hand and loses.

Summary of the invention

Be threaded and easily cause getting loose and press the heavy deficiency of hand feel in order to overcome existing second generation spool, the utility model provides a kind of separate type delay flushing valve spool.

The technical scheme that its technical problem that solves the utility model adopts is: separate type delay flushing valve spool, counterbore and through hole are arranged in the buoyancy aid, the counterbore end face is equipped with the small valve core sealing ring, y-type seal ring is equipped with in the buoyancy aid bottom, the buoyancy aid sealing ring is equipped with on top, in the counterbore of buoyancy aid and the through hole small valve core is housed, the lower end band convex shoulder of small valve core, there is the gap between convex shoulder cylindrical and buoyancy aid counterbore hole wall, also there is the gap between small valve core cylindrical and buoyancy aid through hole hole wall, the valve rod that promotes small valve core is arranged at its top, and there is the shaft shoulder lower end of valve rod; The top end face of small valve core exceeds the top end face of buoyancy aid, and perhaps the top end face of small valve core is lower than the top end face of buoyancy aid, but the end face of the valve rod shaft shoulder has a boss, makes valve rod in the process that moves downward, and promotes small valve core earlier, and the back promotes buoyancy aid and moves downward; Install for ease of tool using, be preferably on the shaft shoulder bottom end face and have " " word a groove; For increasing contact area, more stable, reliable when making valve rod promote small valve core, the cylinder that preferably has one section diameter to increase in the upper end of small valve core.

The beneficial effects of the utility model are: adopted the small valve core and the valve rod that separate, avoided the old-fashioned spool to be threaded easily causing the deficiency that gets loose; Again owing to press hand when promoting valve rod and move downward, valve rod promotes small valve core earlier and moves downward and discharge water, and promotes buoyancy aid again and moves downward and discharge water, and has alleviated the pressure of user's feel greatly.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further specified.

Fig. 1 is a structure chart of the present utility model;

Fig. 2 is a kind of use schematic diagram of the present utility model;

Fig. 3 is the another kind of schematic diagram that uses of the present utility model.

The specific embodiment

With reference to Fig. 1, separate type delay flushing valve spool, counterbore 2 and through hole 3 are arranged in the buoyancy aid 1, counterbore 3 end faces are equipped with small valve core sealing ring 4, y-type seal ring 5 is equipped with in buoyancy aid 1 bottom, buoyancy aid sealing ring 6 is equipped with on top, it is characterized in that in the counterbore 2 of buoyancy aid 1 and the through hole 3 small valve core 7 being housed, the lower end band convex shoulder 8 of small valve core 7, have the gap between the hole wall of the cylindrical of convex shoulder 8 and buoyancy aid counterbore 2, also have the gap between the hole wall of the cylindrical of small valve core 7 and buoyancy aid through hole 3, the top end face of small valve core 7 exceeds the top end face of buoyancy aid 1, the valve rod 9 that promotes small valve core is arranged at its top, and there is the shaft shoulder 10 lower end of valve rod 9; Install for ease of tool using, have " " word a groove 12 on the bottom end face of the shaft shoulder 10; For increasing contact area, more stable, reliable when making valve rod promote small valve core, the cylinder 11 that preferably has one section diameter to increase in the upper end of small valve core.

With reference to Fig. 2, water enters through the water inlet screen pack 13 of valve body 12 bottoms, because the existence of buoyancy aid 1 bottom y-type seal ring 5, water can only enter the cavity 21 of buoyancy aid 1 bottom from the axial notch of opening 15 on sidewall of bucket 14, the pressure of the pressure of water and small valve core spring 16 makes the convex shoulder 8 of small valve core 7 bottoms abut against on the little valve seals 4, and water can not spill from 3 of the through holes of buoyancy aid 1; Again because buoyancy aid sealing ring 6 is equipped with on buoyancy aid 1 top, and its upper surface is close on the end face 17 of bucket 14, makes water can not enter in the cavity 22 of valve body 12 and flow out.When depressing hand 18, the valve rod 9 that is attached thereto also moves downward, the end face of the shaft shoulder 10 is contact small valve core 7 top end faces earlier, promoting it moves downward, the convex shoulder 8 of bottom promptly breaks away from little valve seals 4, make water flow into buoyancy aid through hole 3, finally enter cavity 22 and flow out from the hole wall gap of the cylindrical of convex shoulder 8 and buoyancy aid counterbore 2; When small valve core 7 moves downward to its top end face when concordant with the top end face of buoyancy aid 1, valve rod 9 promotes buoyancy aid and together moves downward, at this moment, buoyancy aid sealing ring 6 breaks away from the end face 17 of bucket 14, water enters from opening 15, and the outlet pass 30 on suitable buoyancy aid 1 top flows to cavity 22, along with buoyancy aid further moves downward, buoyancy aid sealing ring 6 strengthens with the gap of end face 17, and current also strengthen; On the other hand, current still can flow to the lower cavity 21 of buoyancy aid 1 along the axial notch on bucket 14 sidewalls.After openhanded opening, under the effect of spring 19, press hand 18 to drive valve rod 9 returns that are attached thereto, lean against on the plane glue 20 to the shaft shoulder 10 till.Along with water progresses into buoyancy aid lower cavity 21, the pressure of hydraulic pressure and spring 16 promotes small valve core 7 and moves upward, and after spool convex shoulder 8 is pushed down little valve seals 4 and is close to buoyancy aid counterbore 2 end faces, continues to promote buoyancy aid 1 and moves upward, be close to buoyancy aid sealing ring 6 and end face 17, current are promptly closed.

Another embodiment with reference to Fig. 3, water enters from the water inlet 24 on the valve body 23, because the existence of buoyancy aid 1 bottom y-type seal ring 5, water can only enter the cavity 25 of buoyancy aid 1 bottom from an axial notch on valve body 23 lower sides, the pressure of the pressure of water and small valve core spring 26 makes the convex shoulder 8 of small valve core 7 bottoms abut against on the little valve seals 4, and water can not spill from 3 of the through holes of buoyancy aid 1; Because buoyancy aid sealing ring 6 is equipped with on buoyancy aid 1 top, its upper surface is close on the end face of division board 27 of valve body 23 again, makes water can not enter the cavity of valve body 23 and flows out from exporting 28.When depressing hand 29, the valve rod 9 that is attached thereto also moves downward, the end face of the shaft shoulder 10 is contact small valve core 7 tops earlier, the convex shoulder 8 that promotes its underpart breaks away from little valve seals 4, make water flow into buoyancy aid through hole 3, finally enter the cavity of valve body 23 and flow out from exporting 28 from the hole wall gap of the cylindrical of convex shoulder 8 and buoyancy aid counterbore 2; When small valve core 7 moves to its top end face when concordant with the top end face of buoyancy aid 1, valve rod 9 promotes buoyancy aid 1 and together moves downward, at this moment, buoyancy aid sealing ring 6 breaks away from the end face of division board 27, water enters the cavity of valve body 23 and flows out from exporting 28 from the outlet pass 30 on buoyancy aid 1 top, along with buoyancy aid further moves downward, buoyancy aid sealing ring 6 strengthens with the gap of division board 27 end faces, and current also strengthen; On the other hand, current still can flow to the lower cavity 25 of buoyancy aid 1 along the groove on valve body 23 sidewalls.After openhanded opening, under the effect of spring 31, press hand 29 to drive valve rod 9 returns that are attached thereto, lean against on valve body 23 end faces 32 to the shaft shoulder 10 till.Along with water progresses into buoyancy aid lower cavity 25, the pressure of hydraulic pressure and spring 26 promotes small valve core 7 and moves upward, after spool convex shoulder 8 is pushed down little valve seals 4 and is close to buoyancy aid counterbore 2 end faces, continuing to promote buoyancy aid 1 moves upward, end face to buoyancy aid sealing ring 6 and division board 27 is close to, and current are promptly closed.

Claims

1. separate type delay flushing valve spool, counterbore (2) and through hole (3) are arranged in the buoyancy aid (1), counterbore (3) end face is equipped with small valve core sealing ring (4), y-type seal ring (5) is equipped with in buoyancy aid (1) bottom, buoyancy aid sealing ring (6) is equipped with on top, it is characterized in that in the counterbore (2) of buoyancy aid (1) and the through hole (3) small valve core (7) being housed, the lower end band convex shoulder (8) of small valve core (7), there is the gap between the cylindrical of convex shoulder (8) and buoyancy aid counterbore (2) hole wall, also there is the gap between small valve core (7) cylindrical and buoyancy aid through hole (3) hole wall, the valve rod (9) that promotes small valve core is arranged at its top, there is the shaft shoulder (10) lower end of valve rod (9), valve rod (9) promotes small valve core (7) earlier in the process that moves downward, the back promotes buoyancy aid (1) and moves downward.

2. according to claims 1 described separate type delay flushing valve spool, it is characterized in that the cylinder (11) that the upper end of small valve core (7) preferably has one section diameter to increase.

3. according to claims 1 described separate type delay flushing valve spool, it is characterized in that preferably having " " word a groove (12) on the bottom end face of the shaft shoulder (10) of valve rod (9) lower end.

4. according to claims 1 described separate type delay flushing valve spool, it is characterized in that described valve rod (9) is in the process that moves downward, promote small valve core (7) earlier, back promotion buoyancy aid (1) moves downward and is meant: the top end face of small valve core (7) exceeds the top end face of buoyancy aid (1).

5. according to claims 1 described separate type delay flushing valve spool, it is characterized in that described valve rod (9) is in the process that moves downward, promote small valve core (7) earlier, promoting buoyancy aid (1) again moves downward and be meant: the top end face of small valve core (7) is lower than the top end face of buoyancy aid (1), but the end face of the valve rod shaft shoulder (10) has a boss.